fix simplify code to start using context (#9350)

cmd/gateway/s3/gateway-s3-sse.go

@@ -679,13 +679,13 @@ func getGWContentPath(object string) string {
 }
 
 // Clean-up the stale incomplete encrypted multipart uploads. Should be run in a Go routine.
-func (l *s3EncObjects) cleanupStaleEncMultipartUploads(ctx context.Context, cleanupInterval, expiry time.Duration, doneCh <-chan struct{}) {
+func (l *s3EncObjects) cleanupStaleEncMultipartUploads(ctx context.Context, cleanupInterval, expiry time.Duration) {
 	ticker := time.NewTicker(cleanupInterval)
 	defer ticker.Stop()
 
 	for {
 		select {
-		case <-doneCh:
+		case <-ctx.Done():
 			return
 		case <-ticker.C:
 			l.cleanupStaleEncMultipartUploadsOnGW(ctx, expiry)

cmd/gateway/s3/gateway-s3.go

@@ -242,7 +242,7 @@ func (g *S3) NewGatewayLayer(creds auth.Credentials) (minio.ObjectLayer, error)
 
 		// Start stale enc multipart uploads cleanup routine.
 		go encS.cleanupStaleEncMultipartUploads(minio.GlobalContext,
-			minio.GlobalMultipartCleanupInterval, minio.GlobalMultipartExpiry, minio.GlobalServiceDoneCh)
+			minio.GlobalMultipartCleanupInterval, minio.GlobalMultipartExpiry)
 
 		return &encS, nil
 	}